Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Laurence G Hanscom Field Airport (KBED)

Lat: 42.47°NLon: 71.29°WElev: 132ft.

Overcast

57°F

14°C

Humidity 64%
Wind Speed SE 3 mph
Barometer 30.29 in (1027.1 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 11 Oct 1:51 pm EDT
Extended Forecast for

Waltham MA

  • This Afternoon

    This Afternoon: A chance of showers after 5pm.  Cloudy, with a high near 62. South wind around 6 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers, mainly before 4am.  Patchy fog. Low around 51. East wind 3 to 6 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 51 °F

    Showers and
    Patchy Fog

  • Columbus Day

    Columbus Day: Patchy fog before 10am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 68. North wind 5 to 7 mph.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 51. Calm wind becoming northeast around 5 mph after midnight.

    Low: 51 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers after 2pm.  Mostly cloudy, with a high near 64. East wind 5 to 7 mph becoming south in the afternoon.  Chance of precipitation is 20%.

    High: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am.  Mostly cloudy, with a low around 57. South wind around 9 mph.  Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 8am.  Mostly sunny, with a high near 69. West wind 8 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. Northwest wind around 7 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 61 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers after 5pm. Cloudy, with a high near 62. South wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers, mainly before 4am. Patchy fog. Low around 51. East wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Columbus Day
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 68. North wind 5 to 7 mph.
Monday Night
Increasing clouds, with a low around 51. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 64. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 57. South wind around 9 mph. Chance of precipitation is 60%.
Wednesday
A chance of showers before 8am. Mostly sunny, with a high near 69. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 46. Northwest wind around 7 mph.
Thursday
Sunny, with a high near 61. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 43. Northwest wind around 5 mph becoming calm in the evening.
Friday
A chance of showers. Mostly cloudy, with a high near 62. South wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 58. Northwest wind 11 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Waltham MA
 42.38°N 71.24°W (Elev. 98 ft)
8:57 am EDT Oct 11, 2026
1pm EDT Oct 11, 2026-6pm EDT Oct 17, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database